A
B
C
D
E
100

When a person dives into cold water, the capillaries in their skin constrict and move deeper below the surface of the skin. What does this reaction represent?

homeostasis

100

  1. Examine the diagram below of alveoli surrounded by capillaries.



    Which pair of organ systems is working simultaneously in this diagram?

  2. Respiratory and circulatory

  3. Digestive and circulatory

  4. Respiratory and digestive

  5. Respiratory and reproductive

Respiratory and circulatory

100

  1. Which one of the following statements accurately compares cells in the human circulatory system to cells in the human nervous system?

  2. Cells in the circulatory system carry out the same life function for the organism as cells in the nervous system.

  3. Cells in the circulatory system are identical in structure to cells in the nervous system.

  4. Cells in the nervous system are different in structure from cells in the circulatory system, and they carry out different specialized functions.

  5. Cells in the nervous system act independently, but cells in the circulatory system function together.

  1. Cells in the nervous system are different in structure from cells in the circulatory system, and they carry out different specialized functions.

100

  1. Which one of the following is not a function of skin?

  2. Insulation

  3. Protection

  4. Muscle contractions

  5. Body temperature regulation

Muscle Contractions

100

  1. The muscular system performs all the following functions except

  2. heartbeat.

  3. constriction of organs and vessels.

  4. body heat production.

  5. formation of metabolic waste products.

formation of metabolic waste products.

200

  1. The secretion of chemicals that stimulate responses in specific body tissues is a function of

both the nervous system and the endocrine system

200

  1. Which sequence illustrates the increasing complexity of levels of organization in multicellular organisms?

  2. organelle → tissue → cell → organ → organ system → organism

  3. cell → organism → organ system → organ → tissue → organelle

  4. cell → organelle → tissue → organ → organ system → organism

  5. organelle → cell → tissue → organ → organ system → organism

organelle → cell → tissue → organ → organ system → organism

200

  1. Which one of the following statements indicates one difference between the gene that codes for insulin and the gene that codes for testosterone in humans?

  2. The gene for insulin is replicated in vacuoles, while the gene for testosterone is replicated in mitochondria.

  3. The gene for insulin has a different sequence of molecular bases than the gene for testosterone.

  4. The gene for insulin is turned on in liver cells, but the gene for testosterone is not.

  5. The gene for insulin is a sequence of five different molecular bases while the gene for testosterone is a sequence of only four different molecular bases.

  1. The gene for insulin has a different sequence of molecular bases than the gene for testosterone.

200

  1. What are the layers that form our skin?

  2. Keratin and dermis

  3. Keratin and epidermis

  4. Epidermis and dermis

  5. Epidermis and melanin

Epidermis and Dermis

200

  1. How do muscles and bones function together?

  2. Bones elongate slowly to allow muscles to stretch.

  3. Bones serve as the point of attachment for muscles.

  4. Bones produce muscle tissue.

  5. Bones contract and allow muscles to move.

Bones serve as the point of attachment for muscles.

300

  1. Which two organ systems provide materials required for the human body to produce ATP?

digestive and respiratory

300

  1. The diagram below represents the levels of organization found in the human body.


    Which letter in the given diagram represents the highest level of organization?

  2. A

  3. B

  4. E

  5. D

A

300

  1. Which life function is associated with controlling the body's response to stimuli?

  2. transport

  3. regulation

  4. respiration

  5. nutrition

regulation

300

  1. What protein in the epidermal cells makes the skin tough?

  2. Collagen

  3. Keratin

  4. Adipose

  5. Melanin

Keratin

300

  1. Tendons and ligaments coordinate muscle and bone movements because

  2. tendons contract the bones, and ligaments relax the muscles.

  3. tendons relax the muscles, and ligaments contract the bones.

  4. tendons connect bones to bones, and ligaments connect bones to muscles.

  5. tendons connect bones to muscles, and ligaments connect bones to bones.

tendons connect bones to muscles, and ligaments connect bones to bones.

400

Which organ system is responsible for movement?

Muscular system

400

  1. The table below provides some information concerning organelles and organs.



    Based on this information, which statement accurately compares organelles to organs?

  2. Organelles carry out functions similar to those of organs.

  3. Organs maintain homeostasis while organelles do not.

  4. Functions are carried out more efficiently by organs than by organelles.

  5. Organelles function in multicellular organisms while organs function in single-celled organisms.

Organelles carry out functions similar to those of organs.

400

  1. In a changing external environment, an organism must be able to maintain relatively constant internal conditions. What term best describes this maintenance of a stable internal environment?

  2. transport

  3. metabolism

  4. nutrition

  5. homeostasis

Homeostasis

400

  1. The diagram below illustrates some structures of the skin.



    A substance that blocks structure A in the diagram would directly interfere with

  2. dehydration synthesis

  3. storage of urea

  4. temperature regulation

  5. cellular respiration

Temperature and Regulation

400

  1. Which component of the human skeletal system should be present in the regions labeled A in the diagram below to reduce friction and increase flexibility?

  2. Cartilage

  3. Tendons

  4. Striated muscle

  5. Ligaments

Cartilage

500

  1. All of the following organ systems must work together to supply oxygen to muscle tissues except —

  2. circulatory

  3. digestive

  4. respiratory

  5. musculo-skeletal

musculo-skeletal

500

  1. The function of a cell depends primarily on its

  2. movement

  3. color

  4. lifespan

  5. structure

Structure

500

  1. Which one of the following is the body's most important nonspecific defense?

  2. Skin

  3. Liver

  4. Spleen

  5. White blood cells

Skin

500

  1. The seams between the bones of the skull, that may become completely immovable in older adults, are called

  2. sutures.

  3. cartilaginous joints.

  4. symphyses.

  5. gomphoses.

Sutures

500

  1. What disease results when the rate of bone reabsorption exceeds the rate of bone formation?

  2. Whiplash

  3. Dwarfism

  4. Osteoporosis

  5. Leukemia

Osteoporosis

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